Swivel-plate for motor-trucks.



A. CHRISTIANSON. SWIVEL PLATE FOR MOTOR TRUCKS.

APPLIUATION FILED NOV. 21, 1907.

Paiented Feb. 1

- INVENTOR.

ANDREW CHRISTIANSON; OF BUTLER. PENNSYLVANIA, ASSIGNOR TO STANDARD STEEL CAR COMPANY, OF PITTSBURG, PENNSYLVANIA, A CORPORATION OF PENN SYLVANIA.

' SWIVEL-PLATE FOR MOTOR-TRUCKS Specification of Letters Patent.

Patent-ed lFelb. it, .1910.

Application filed November 21. 1907. Serial No. 403216.

'Butler and State of Pennsylvania, have in.-

vented a new and useful llnprowuncnt in Swivel-Plates for ldotor-Trucks; and I do I 1 hereby declare the following to be a full.

clear, and exact description thereof. This invention relates to swivel or bearing plates for maximum traction motor trucks. The object of the,invention is to improve swivel bearings of this character in details hereinafter described and claimed.

In the accompanying drawing Figure 1 is a plan view of a portionof a truck showing the position of the swivelplates; Fig. 2 is a vertical sectional view through the swivel plates on the line 22, Fig."1; Fig. 3 is a plan view of the upper plate; Fig. 4.- is a top plan view of the lower plate; Fig. 5 is a plan view of the roller bearing; and Fig. 6 is a section therethrough taken on the line o e, Fig. 5.

Motor trucks known as maximum traction trucks have the car body pivoted to the truck at a point in a vertical plane very close to the driving axle, thus necessitating the use of peculiar swivel plates having seg mental bearing portions and provided with arms having the pivot pin at their outer ends,-such an arrangement being shown in Patent No. 739,364, September 22, 1903, granted to Charles Uebelacker. My invention relates to this type of swivel plate and improves the same, as will now be more fully described.

i In the drawings the top plate is shown at l and the bottom plate at 2. The top plate is arranged to be connected tot-he bolster or transomii of the car body, being provided for this purpose with an upwardly projecting flange 5 through which are holes for receiving boltsor rivets 6, and also having in its main body portion holes 7 for the same purpose. The bottom plate 2 is adapted to be attached to the bolster or transom 8 of the truck, being provided for this pur pose with. downwardly projecting lips or flanges 9 and with bolt or rivet receiving holes 10. Both of the plates are of general segmental form, as shown in the plan views. Both are provided with. the projecting or arm portion, 11 .having at their outer ends a pivotal connection, said pivotal connection .around their pivots.

t'orming thc centers for the segmental hearing po1't1ons.

"i-lccording to my improvement the swivel connection is formed by providing the arm 11 of the bottom plate with an integral boss '12 arranged to project through an opening 13 formal in the arm-of thetop platc and i'orn'iing the king pin. thus dispensing cntirely \vitha separate king pin or the like. The pivot boss 12 of the lower plate sun rounded at its base by a bearing face 14: and a similar bearing face L'ris formed around the opening 13 in the top plate. Preferably the boss 12.is hollow, as shown, in order to reduce weight and provide a chamber for a lubricating agent, such as oil soaked waste, a lubricating hole 16 being drilledthrough the wall of the boss near its bottom so that the lubricant can flow out to the contacting wearing'faces of the plates Another improvement consists in providing a suitable roller l'iearing for the plates. Each of the plates is provided with a suitable segmental bearing face, that on the lower plate being indicated at 18 and that on the upper plate at 19. Between these segmental bearing faces are located anti-friction members comprising rollers 20 held in a spider 21, said rollers being slightly conical, as sh0wn,'and the spider being segmental, in order to adapt the ,same to the movement of the plates (The rollers 20 and their holder or spider. 21 may be termed a roller bearing element). To hold the roll element is also prevented from moving too. iar in either direction due' to the swinglng of the car body by providing suitable interengaging stops on the spider and plates.

For this purposethe bottom plate is provided with a pair of projections or lugs24: on the inner side of the bearlng face and with a similar pair of lugs 25 on the outer side of the bearing face. while the spider is provided with an inwardly projecting portion 26 forming shoulders 27 to contact with the lugs 24 and with the outwardly projectcontacting with the outer lu s 25.

ing portion 28 providing shoulders 29 for By this means the roller bearing e ement is prevented from moving too far in either direc-'' tion.

With swivel plates of the character described the weight of the car body is carried principally on the segmental bearing faces and these are therefore subjected to considerable wear. By providing the segmental roller bearings described friction and wear is wery largely reduced.' At the same time I obtain all of the advantages inherent to the usual swivel bearings by reason'of having the centerof-oscillatlon removed a considerable distance to one side of the bearing faces.,.

What I claim is: 1. A roller bearing swivel connection between trucks and car bodies comprising a plate for connection to the truck provided with a' bearing face having its outer edge lower than said face, a plate-for connection to the car body having a coiiper'ating bearing face and outside the same adownwardly I projecting flange or lip,-a roller bearing element between said bearing faces, the rollers having their outer ends'over-lapped by said flange or lip and incontact therewith, and a suitable, center pivot.

' 2. Swivel connection to the truck and provided with a connections between motor trucks and car bodies comprising a plate for trucks and car'bodies comprising a plate for connection to the truck provided with a segmental bearing face having its outer edge lower than said face and with a projecting arm provided with an integral king pm, a plate for connection to the car body havin a cotiperatin "segmental bearing face an having outsi e the same a downwardly projecting flange or lip and havin a pro ectmg arm provided with a hole a apted to receive said inte ral king 'pin, a segmental roller bearing e ement between said bearing faces, rollers having their outer ends overlapped by the said flange or ii and a ivot at one side of said segmental gearing aces. In testimony whereof, I the said ANDREW CHRISTIAN soN have hereunto set my hand.

ANDREW CHRISTIANSON.

Witnesses:

ROBERT C. TOTTEN, J. R. KELLER. 

